Amylocoat
Active plant based release coatings
Updated: 080711
Materials from renewable plant resources such as starch and cereal proteins have a promising potential of being used as “bioplastics”. These materials have the unique properties necessary for combining barrier and mechanical properties with a controlled release of additives or uptake of undesirable components. The Amylocoat project has developed coatings where material properties are utilized in combination with active components carried by the coating.
Amylocoat has demonstrated the applicability of active plant based coatings carrying functional components in a multidisciplinary approach bringing together expertise in polymer physics and chemistry, starch chemistry and food science. Active components such as preservatives have been applied in coatings for paper and foods. Processing of starch materials has been developed and starch films produced by film blowing have been characterized regarding physical as well as molecular properties. Full scale paper coating has been dmonstrated. The shelf life of fruits and vegetables has been prolonged using edible plant based coatings.
The project has resulted in three PhD thesis, as well as 15 publications in scientific journals. The results have also been disseminated by conference presentations as well as presentations in popular scientific and engineering press and news media (e.g. NyTeknik).
The interaction between science, industry and the public sector is utilized by cooperation between research and industrial participants. VINNOVA, the Swedish Government Agency for Innovation Systems are financing the the Amylocoat project jointly with industry.
Publications from the project
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Petersson, M., Lorén and Stading, M. (2005) "Characterization of phase separation in film forming biopolymer mixtures", Biomacromolecules., 6, (2), 932 - 941
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Sjöqvist, M, Gatenholm, P. (2005) "The effect of starch composition on structure of foams prepared by microwave treatment", J. Polym. Env., 13, 29-37.
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Thunwall, M. Kuthanová, V., Boldizar, A. and Rigdahl, M. (2006) “On the stress-strain behaviour of thermoplastic starch melts”, Int. J. Polym. Anal. Char. 11, 419-428.
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Thunwall, M., Boldizar, A., and Rigdahl, M. (2006) “Compression moulding and tensile properties of thermoplastic starch materials”, Biomacromolecules, 7, 981-986
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Thunwall, M., Boldizar, A., and Rigdahl, M. (2006) “Extrusion processing of high amylose potato starch materials”, Carbohyd. Polym., 65, 441-446
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Sjöqvist, M, Gatenholm, P. (2007) "Effect of water content in potato amylopectin starch on microwave foaming process", J. Polym. Env., 15, 43-50.
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Petersson, M., Hagström, J., Nilsson, K. and Stading, M. (2007) "Kinetics of release from kafirin films", Food Hydrocoll., 21, (8), 1256-1264.
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Emmambux, N. and Stading, M. (2007) "In situ tensile deformation of zein films with plasticizers and fillers", Food Hydrocoll., 21, 8, 1245-1255.
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Altskär, A., Andersson, R., Boldizar, Kock, K., Stading, M., Rigdahl. R. and Thunwall, M. (2008) “Some Effects of Processing on the Molecular Structure and Morphology of Thermoplastic Starch”, Carbohyd. Polym.,
71, 591-597. -
Thunwall, M. Kuthanová, V., Boldizar, A. and Rigdahl, M. (2007) “Film blowing of thermoplastic starch”, Carbohyd. Polym., 71, 583-590.
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Petersson, M., Gustafson, I. and Stading. M. (2008) “Ageing of two petroleum waxes”, J. Material Sci., 43,1859–1868.
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Petersson, M., Gustafson, I. and Stading. M. (2008) “Comparison of microstructural and physical properties of two petroleum waxes”, J. Material Sci., 43,1869–1879.
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Gillgren, T. and Stading, M. (2008) “Mechanical and barrier properties of avenin and kafirin films”, Food Physics, in press.
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Rindlav-Westling, Å., Sjöqvist, M, Boldizar, A. and Gatenholm, P (2008) “The Effect of Water Redistribution on Glas Transition in Films of Starch, Amylose and Amylopectin Blends”, appearing soon.
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Sjöqvist, M, Boldizar, A. and Rigdahl. M. (2008) “Processing and Properties of Expanded starch materials”, appearing soon.
Thesis -
Sjöqvist, M. (2005) "Effect of molecular composition on porous structure preparation", Licentiate thesis at Chalmers University of Technology, Chalmers Reproservice, Göteborg Sweden
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Thunwall, M. (2007) “Thermoplastic processing of starch and cellulose-containing polymers” PhD thesis at Chalmers University of Technology, Chalmers Reproservice, Gothenburg
- Petersson, M. (2007) "Enhancement and Characterization of Films for Barrier and Release Applications", PhD thesis at Chalmers University of Technology, Chalmers Reproservice, Gothenburg
Research participants
Materials and Manufacturing Technology Chalmers
Structure and Material Design, SIK
Industry participants